a6dbe3721e
per Intel policy to include file commit date using git cmd below. The policy does not apply to non-Intel (C) notices. git log --follow -C90% --format=%ad --date default <file> | tail -1 and then pull just the 4 digit year from the result. Intel copyrights were not added to files where Intel either had no contribution ot the contribution lacked substance (ie license header updates, formatting changes, etc). Contribution date used "--follow -C95%" to get the most accurate date. Note that several files in this patch didn't end the license/(c) block with a blank comment line so these were added as the vast majority of files do have this last blank line. Simply there for consistency. Signed-off-by: paul luse <paul.e.luse@intel.com> Change-Id: Id5b7ce4f658fe87132f14139ead58d6e285c04d4 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15192 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Community-CI: Mellanox Build Bot
208 lines
6.2 KiB
C
208 lines
6.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
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* Copyright (C) 2016 Intel Corporation.
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* All rights reserved.
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*/
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#ifndef SPDK_ISCSI_CONN_H
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#define SPDK_ISCSI_CONN_H
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#include "spdk/stdinc.h"
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#include "iscsi/iscsi.h"
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#include "spdk/queue.h"
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#include "spdk/cpuset.h"
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#include "spdk/scsi.h"
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#include "spdk_internal/trace_defs.h"
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/*
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* MAX_CONNECTION_PARAMS: The numbers of the params in conn_param_table
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* MAX_SESSION_PARAMS: The numbers of the params in sess_param_table
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*/
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#define MAX_CONNECTION_PARAMS 14
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#define MAX_SESSION_PARAMS 19
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#define MAX_ADDRBUF 64
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#define MAX_INITIATOR_ADDR (MAX_ADDRBUF)
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#define MAX_TARGET_ADDR (MAX_ADDRBUF)
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enum iscsi_pdu_recv_state {
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/* Ready to wait for PDU */
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ISCSI_PDU_RECV_STATE_AWAIT_PDU_READY,
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/* Active connection waiting for any PDU header */
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ISCSI_PDU_RECV_STATE_AWAIT_PDU_HDR,
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/* Active connection waiting for payload */
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ISCSI_PDU_RECV_STATE_AWAIT_PDU_PAYLOAD,
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/* Active connection does not wait for payload */
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ISCSI_PDU_RECV_STATE_ERROR,
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};
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struct spdk_poller;
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struct spdk_iscsi_conn;
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struct spdk_iscsi_lun {
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struct spdk_iscsi_conn *conn;
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struct spdk_scsi_lun *lun;
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struct spdk_scsi_lun_desc *desc;
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struct spdk_poller *remove_poller;
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TAILQ_ENTRY(spdk_iscsi_lun) tailq;
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};
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struct spdk_iscsi_conn {
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int id;
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int is_valid;
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/*
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* All fields below this point are reinitialized each time the
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* connection object is allocated. Make sure to update the
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* SPDK_ISCSI_CONNECTION_MEMSET() macro if changing which fields
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* are initialized when allocated.
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*/
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struct spdk_iscsi_portal *portal;
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int pg_tag;
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char portal_host[MAX_PORTAL_ADDR + 1];
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char portal_port[MAX_PORTAL_ADDR + 1];
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struct spdk_iscsi_poll_group *pg;
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struct spdk_sock *sock;
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struct spdk_iscsi_sess *sess;
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enum iscsi_connection_state state;
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int login_phase;
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bool is_logged_out;
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struct spdk_iscsi_pdu *login_rsp_pdu;
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uint64_t last_flush;
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uint64_t last_fill;
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uint64_t last_nopin;
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/* Timer used to destroy connection after requesting logout if
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* initiator does not send logout request.
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*/
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struct spdk_poller *logout_request_timer;
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/* Timer used to destroy connection after logout if initiator does
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* not close the connection.
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*/
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struct spdk_poller *logout_timer;
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/* Timer used to wait for connection to close
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*/
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struct spdk_poller *shutdown_timer;
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/* Timer used to destroy connection after creating this connection
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* if login process does not complete.
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*/
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struct spdk_poller *login_timer;
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struct spdk_iscsi_pdu *pdu_in_progress;
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enum iscsi_pdu_recv_state pdu_recv_state;
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TAILQ_HEAD(, spdk_iscsi_pdu) write_pdu_list;
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TAILQ_HEAD(, spdk_iscsi_pdu) snack_pdu_list;
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uint32_t pending_r2t;
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uint16_t cid;
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/* IP address */
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char initiator_addr[MAX_INITIATOR_ADDR];
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char target_addr[MAX_TARGET_ADDR];
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/* Initiator/Target port binds */
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char initiator_name[MAX_INITIATOR_NAME];
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struct spdk_scsi_port *initiator_port;
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char target_short_name[MAX_TARGET_NAME];
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struct spdk_scsi_port *target_port;
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struct spdk_iscsi_tgt_node *target;
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struct spdk_scsi_dev *dev;
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/* To handle the case that SendTargets response is split into
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* multiple PDUs due to very small MaxRecvDataSegmentLength.
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*/
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uint32_t send_tgt_completed_size;
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struct iscsi_param *params_text;
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/* for fast access */
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int header_digest;
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int data_digest;
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int full_feature;
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struct iscsi_param *params;
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bool sess_param_state_negotiated[MAX_SESSION_PARAMS];
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bool conn_param_state_negotiated[MAX_CONNECTION_PARAMS];
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struct iscsi_chap_auth auth;
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bool authenticated;
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bool disable_chap;
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bool require_chap;
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bool mutual_chap;
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int32_t chap_group;
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uint32_t pending_task_cnt;
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uint32_t data_out_cnt;
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uint32_t data_in_cnt;
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uint64_t timeout;
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uint64_t nopininterval;
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bool nop_outstanding;
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/*
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* This is the maximum data segment length that iscsi target can send
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* to the initiator on this connection. Not to be confused with the
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* maximum data segment length that initiators can send to iscsi target, which
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* is statically defined as SPDK_ISCSI_MAX_RECV_DATA_SEGMENT_LENGTH.
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*/
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int MaxRecvDataSegmentLength;
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uint32_t StatSN;
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uint32_t exp_statsn;
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uint32_t ttt; /* target transfer tag */
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char *partial_text_parameter;
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STAILQ_ENTRY(spdk_iscsi_conn) pg_link;
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bool is_stopped; /* Set true when connection is stopped for migration */
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TAILQ_HEAD(queued_r2t_tasks, spdk_iscsi_task) queued_r2t_tasks;
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TAILQ_HEAD(active_r2t_tasks, spdk_iscsi_task) active_r2t_tasks;
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TAILQ_HEAD(queued_datain_tasks, spdk_iscsi_task) queued_datain_tasks;
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TAILQ_HEAD(, spdk_iscsi_lun) luns;
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TAILQ_ENTRY(spdk_iscsi_conn) conn_link;
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};
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void iscsi_task_cpl(struct spdk_scsi_task *scsi_task);
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void iscsi_task_mgmt_cpl(struct spdk_scsi_task *scsi_task);
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int initialize_iscsi_conns(void);
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void shutdown_iscsi_conns(void);
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void iscsi_conns_request_logout(struct spdk_iscsi_tgt_node *target, int pg_tag);
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int iscsi_get_active_conns(struct spdk_iscsi_tgt_node *target);
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int iscsi_conn_construct(struct spdk_iscsi_portal *portal, struct spdk_sock *sock);
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void iscsi_conn_destruct(struct spdk_iscsi_conn *conn);
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void iscsi_conn_handle_nop(struct spdk_iscsi_conn *conn);
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void iscsi_conn_schedule(struct spdk_iscsi_conn *conn);
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void iscsi_conn_logout(struct spdk_iscsi_conn *conn);
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int iscsi_drop_conns(struct spdk_iscsi_conn *conn,
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const char *conn_match, int drop_all);
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int iscsi_conn_handle_queued_datain_tasks(struct spdk_iscsi_conn *conn);
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int iscsi_conn_abort_queued_datain_task(struct spdk_iscsi_conn *conn,
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uint32_t ref_task_tag);
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int iscsi_conn_abort_queued_datain_tasks(struct spdk_iscsi_conn *conn,
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struct spdk_scsi_lun *lun,
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struct spdk_iscsi_pdu *pdu);
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int iscsi_conn_read_data(struct spdk_iscsi_conn *conn, int len, void *buf);
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int iscsi_conn_readv_data(struct spdk_iscsi_conn *conn,
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struct iovec *iov, int iovcnt);
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void iscsi_conn_write_pdu(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu,
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iscsi_conn_xfer_complete_cb cb_fn,
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void *cb_arg);
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void iscsi_conn_free_pdu(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu);
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void iscsi_conn_info_json(struct spdk_json_write_ctx *w, struct spdk_iscsi_conn *conn);
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void iscsi_conn_pdu_generic_complete(void *cb_arg);
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#endif /* SPDK_ISCSI_CONN_H */
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